Friday, September 27, 2013

Asus UX31A: Unable to pass BIOS screen on reboot after BIOS flash upgrade

I updated the BIOS to the latest version using WinFlash utility provided by Asus on my UX31A Touch notebook. I went from BIOS v218 to v219. The WinFlash utility stated my upgrade was successful and proceeded to ask me to reboot... which I did.

After reboot, the notebook immediately went into the BIOS config screen. I immediately tried to 'Quit and Exit'... and the notebook rebooted... and it went back to the BIOS screen. I tried doing 'Save Configuration and Exit'... same thing... rebooted into BIOS screen. No matter what I did... it wont go pass the BIOS screen.

oh crap...

Played around with the BIOS settings to try and figure out what was going on... To cut the long story short, I did the following...

  • In Boot Menu --> Change FastStart to [Disable]
  • In Security Menu --> Change Secure Boot to [Disable]
  • .. then 'Save Configuration & Exit'
  • When the BIOS screen appears again, go to the Boot Menu again --> Change Launch CSM to [Enable]
After doing the above... my PC booted into Windows 8.1 fine...

PHEW!!!!.....